A headline on The Verge says: “How to keep spam from invading your Google Calendar”. Easy: don’t use Google Calendar.
I’m doing an anti-pattern on privacy for the this month, going full Google with email and browser. People who go to ProtonMail for privacy make me giggle given that over 1 billion people a month are using Gmail. Unless you’re just emailing other people using ProtonMail your email is being “scanned” by Google. Silly people.